The term 'not religious' can be described by two crossword solutions: 'SECULAR' (7 letters) and 'PAGAN' (5 letters). SECULAR is an adjective that means not related to religion or spiritual matters. It is often used to describe a person who does not follow any particular religion. PAGAN is a term used to describe people who practice polytheistic religions, such as those of ancient Greece and Rome. It is also sometimes used to refer to people who do not follow any particular religion. Both terms can be used to describe someone who is not religious.